The SWAP EUV Imaging Telescope Part I: Instrument Overview and Pre-Flight Testing

Abstract

The Sun Watcher with Active Pixels and Image Processing (SWAP) is an EUV solar telescope on board ESA's Project for Onboard Autonomy 2 (PROBA2) mission launched on 2 November 2009. SWAP has a spectral bandpass centered on 17.4 nm and provides images of the low solar corona over a 54x54 arcmin field-of-view with 3.2 arcsec pixels and an imaging cadence of about two minutes. SWAP is designed to monitor all space-weather-relevant events and features in the low solar corona. Given the limited resources of the PROBA2 microsatellite, the SWAP telescope is designed with various innovative technologies, including an off-axis optical design and a CMOS-APS detector. This article provides reference documentation for users of the SWAP image data.

26 pages, 9 figures, 1 movie

References in corpus (3)

• The SWAP EUV Imaging Telescope. Part II: In-flight Performance and Calibration
• Solar Coronal Structures and Stray Light in TRACE
• Signatures of the slow solar wind streams from active regions in the inner corona

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• Study of EUV Emission and Properties of a Coronal Streamer from PROBA2/SWAP, Hinode/EIS and Mauna Loa Mk4 Observations
• Bridging EUV and white-light observations to inspect the initiation phase of a "two-stage" solar eruptive event
• Source Imaging of a Moving Type-IV Solar Radio Burst and its Role in Tracking Coronal Mass Ejection From the Inner to the Outer Corona
• First Perihelion of EUI on the Solar Orbiter mission
• SWAP Observations of Post-flare Giant Arches in the Long-Duration 14 October 2014 Solar Eruption
• Dynamics of Coronal Bright Points as seen by Sun Watcher using Active Pixel System detector and Image Processing (SWAP), Atmospheric Imaging Assembly AIA), and Helioseismic and Magnetic Imager (HMI)
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• Moreton and EUV Waves Associated with an X1.0 Flare and CME Ejection
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• Coronal Imaging with the Solar UltraViolet Imager
• Evolution of Coronal Cavity from Quiescent to Eruptive Phase in Association with Coronal Mass Ejection
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• Investigating Remote-sensing Techniques to Reveal Stealth Coronal Mass Ejections
• Beyond the disk: EUV coronagraphic observations of the Extreme Ultraviolet Imager on board Solar Orbiter
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• Influence of misalignments on performance of externally occulted solar coronagraphs. Application to PROBA-3/ASPIICS
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• Rapid Rotation of an Erupting Prominence and the Associated Coronal Mass Ejection on 13 May 2013
• First Simultaneous Views of the Axial and Lateral Perspectives of a Coronal Mass Ejection
• Automated Detection of Accelerating Solar Eruptions using Parabolic Hough Transform
• Breakout Reconnection Observed by the TESIS EUV Telescope
• Electron acceleration and radio emission following the early interaction of two coronal mass ejections
• Overexpansion-dominated Coronal Mass Ejection Formation and Induced Radio Bursts
• Three-Dimensional Reconstructions of Coronal Wave Surfaces Using a New Mask-Fitting Method
• Redefining the boundaries of interplanetary coronal mass ejections from observations at the ecliptic plane
• A new post-hoc flat field measurement method for the Solar X-ray and Extreme Ultraviolet Imager onboard the Fengyun-3E satellite
• Simultaneous High Dynamic Range Algorithm, Testing, and Instrument Simulation
• Assessment of the near-Sun magnetic field of the 10 March 2022 coronal mass ejection observed by Solar Orbiter
• The SWAP Filter: A Simple Azimuthally Varying Radial Filter for Wide-Field EUV Solar Images
• Extended radio emission associated with a breakout eruption from the back side of the Sun
• Evidence of Extreme Ultraviolet Resonant Excitation in the Middle Corona During A Solar Flare
• Square Root Compression and Noise Effects in Digitally Transformed Images
• Magnetic Imaging of the Outer Solar Atmosphere (MImOSA): Unlocking the driver of the dynamics in the upper solar atmosphere
• Probing Velocity Dispersion inside CMEs in Inner Corona: New Insights on CME Initiation
• Filament eruption with apparent reshuffle of endpoints
• Initial radiometric calibration of the High-Resolution EUV Imager (${\text{HRI}}_{\text{EUV}}$) of the Extreme Ultraviolet Imager (EUI) instrument onboard Solar Orbiter
• Citizen CATE 2024: Extending Totality During the 8 April 2024 Total Solar Eclipse with a Distributed Network of Community Participants
• Long-term Evolution of the Solar Corona Using PROBA2 Data